Destiny 2 - Ace of Spades Quest Line

As per the information from xHOUNDISHx and D0cR3d on reddit, we know all the steps you need to complete the Quest. They are:

• Complete Forsaken's opening mission 'Last Call', then visit the Gunsmith in the Tower• Finish the main story• Return to the Gunsmith in the Tower• In Gambit, kill five invading players with a Hand Cannon• Kill 250 enemies in Strikes with a Hand Cannon• Get 25 precision kills in Crucible matches with a Hand Cannon• Open Cayde's four caches in the Tangled Shore, EDZ, Io and Nessus• Complete the mission 'Ace in the Hole' on Titan• Visit the Gunsmith one last time

Destiny 2 - Ace of Spades Quest Line Guide

1. Complete Forsaken opening mission (Last Call), then head to the Gunsmith in the Tower. You'll be given the reward Cayde's Will.

2. Finish up the entire story in the Forsaken DLC and head back to Banshee-44. You'll get the next step - nab 5 invader kills in Gambit with a Hand Cannon. This can be done in many matches, so just play Gambit a lot with a Hand Cannon equipped and you should be fine.

3. You'll then be instructed to run Strikes until you run up 250 kills with a Hand Cannon. This can be achieved in any way you wish - just make sure you play every Strike with a Hand Cannon equipped.

4. The next step is arguably the hardest: Get 25 precision kills with Hand Cannons in the Crucible. Stay focused, work with your team mates and think about your build - it should make this a bit easier.

5. Next, you'll need to find Cayde's caches (see below)

Destiny 2 - Ace of Spades, Cayde's Cache Locations

You'll need to find four Cayde Caches to progress. They're found throughout four different locations, and all of them (on-brand for Cayde) are in annoyingly difficult places.

Here's a rundown:

Tangled Shore - Use Jetsam of Saturn as the starting point, then go south from there to Hellrise Canyon. There'll pretty much be only one route you can take through the canyon, follow it to a ship crashed on the ground - the Cache will be to the left.

Io - Spawn in at Lost Oasis, then head to Terrabase Charon. Enter a door on the left-most part of the location and head down into the Wraith Mines. Get onto the floor above (a rock path can be climbed, or there's an ascending route to the very left of the location) and you'll see the Cache glowing in the far corner.

EDZ - Make your way to Firebase Hades, and find the door to the left of the area and then head down to Legion's Anchor. Remain on the ground level, find the next hanger and you'll see the Cache on the left.

Nessus - Spawn in at Exodus Black, then head right and you'll see a cave to the East. Head straight through the cave (don't turn left or right) and once you reach the end take the passage to Sunken Canyon. Head up on the far side of the room and you'll see the Cache tucked behind the rim of the area.

The final stage of the Quest line - Ace in the Hole - is a 460 Power mission, so bear that in mind if you're not particularly well geared up at this point.

Complete the mission - we won't spoil it here - and head back to Banshee-44.